Sink



FIG. 1 is a perspective view of a sink showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a right side elevational view thereof.

The back and bottom sides of the sink are unornamented. 

CLAIM The ornamental design for a sink, as shown and described. 